U.S. stock futures have shown a consistent downward trend over the past day, with major indices experiencing notable declines. The S&P 500 futures opened down by 0.4% and continued to fall, reaching a drop of approximately 1.3% to 1.4% in subsequent trading sessions. Nasdaq 100 futures have seen a sharper decline, falling from 0.7% initially to over 1.6% at one point, marking a significant loss compared to last week's highs. Dow Jones futures also declined, with drops ranging from 0.4% to around 1.04%. The Russell 2000 futures have decreased by about 1.0%. These declines reflect a broad-based negative sentiment in U.S. equity markets during pre-market and early trading hours.